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Synchronous high-speed photography method and device for particle rotation in liquid swirling flow field

A high-speed camera and high-speed camera technology, applied in the field of liquid-solid two-phase flow testing, can solve the problems that an effective measurement method has not yet been developed

Active Publication Date: 2014-09-24
EAST CHINA UNIV OF SCI & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0007] To date, no effective method has been developed in the art to measure the spin velocity of micron-sized particles in a low-viscosity, high-turbulence fluid in a liquid-solid microcyclone

Method used

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  • Synchronous high-speed photography method and device for particle rotation in liquid swirling flow field
  • Synchronous high-speed photography method and device for particle rotation in liquid swirling flow field
  • Synchronous high-speed photography method and device for particle rotation in liquid swirling flow field

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Embodiment 1

[0079] use as image 3 In the setup shown, the rotational velocity of particles in an optical quartz glass microcyclone with a nominal diameter of 25 mm was tested. The liquid medium is tap water at room temperature. The particles are synthesized by micro-flow granulation technology, which contains two semi-transparent polymer spherical particles with equal diameters and two inner cores symmetrically distributed in the center. The average particle size of the particles is 450 microns, and the CV value of the deformation coefficient is 3%. Values ​​less than 5% have good monodispersity with a relative density of 1.15.

[0080] Table 1 below shows the revolution velocity and rotation velocity of particles in the column section of the optical quartz glass microcyclone with a nominal diameter of 25mm under different operating pressure conditions of the device measured by the method of the present invention. Table 2 below shows the three-dimensional trajectory coordinates of part...

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Abstract

The invention relates to a synchronous high-speed photography method and device for a particle rotation in a liquid swirling flow field, and provides a synchronous high-speed photography method for the particle rotation in the liquid swirling flow field. The method comprises the following steps that firstly, transparent or translucent particles of two central symmetry cores with the same diameter are selected as rotation test particles; secondly, two or more high-speed cameras are utilized for synchronously obtaining a two-dimensional image sequence of movement of the particles in the liquid swirling flow field; thirdly, a three-dimensional particle movement track is reestablished through the obtained two-dimensional image sequence, and meanwhile the rotation speed of the particles in the liquid swirling flow field is obtained. The invention further provides a synchronous high-speed photography device for the particle rotation in the liquid swirling flow field.

Description

technical field [0001] The invention belongs to the field of testing liquid-solid two-phase flow, and relates to a method and a device for testing the rotation motion of particles in a liquid swirl field by using a high-speed camera system. Specifically, it relates to a method and device for synchronously testing the rotation motion of particles in a liquid swirl field by using two high-speed digital cameras arranged orthogonally. Background technique [0002] Liquid-solid cyclone separation technology is widely used in petroleum refining and chemical process production due to its advantages of high efficiency and energy saving. With the development of heavy oil refining technology, the recovery and treatment of oil-containing porous catalysts has become a constraint to the development of oil refining technology. Swirl washing desorption technology effectively solves the problem of deoiling oily porous particles. In the technical research of cyclone washing and desorption, ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01M10/00G01P3/38
Inventor 黄渊汪华林邱阳付鹏波张艳红白志山杨强何凤琴
Owner EAST CHINA UNIV OF SCI & TECH